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License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Patient Reviews

Patient comments (4)

The overall average patient rating of Dr. Dennis Tan, Obstetrician & Gynecologist is Excellent. Dr. Tan has been reviewed by 17 patients who have provided 4 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Ease of Appointment 5.0
Promptness 4.9
Courteous Staff 4.8
Accurate Diagnosis 4.8
Bedside Manner 5.0
Spends Time with Me 4.9
Follows Up After Visit 4.9

Specialties & Research

Dr. Dennis Tan, MD, MPH is board certified in Obstetrics & Gynecology.

  • He has special expertise in 4 areas:
  • Gynecology
  • Hot Flashes
  • Menopause
  • Obstetrics

Education & Awards

Dr. Tan graduated from Rosalind Franklin University, North Chicago. He has 2 awards.

Patients' Choice Award (2014)
Compassionate Doctor Recognition (2014)


Dr. Tan has 4 hospital affiliations:

  • Adventist Medical Center 
  • Providence Milwaukie Hospital 


  • English

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Additional Information
Dr. Dennis Chan Tan MD and MPH is a male Obstetrician & Gynecologist, has 9 years of experience and practices in Obstetrics & Gynecology.
Where does Dr. Dennis C. Tan practice?
Dr. Dennis Tan has 2 office locations.
Dr. Dennis Tan practices Obstetrics & Gynecology near Happy Valley, OR.
Additional practice locations include: Gresham, OR.
See Happy Valley Obstetricians & Gynecologists.